JP7382080B2 - dynamic makeup products - Google Patents

Description

The present invention relates to an innovative cosmetic product in the cosmetic field and a method for implementing the product. In particular, this cosmetic product is based on a new technology that involves the creation of a cosmetic product based on magneto-chromatic microspheres, which act on the surface of the skin to which the product is applied. can be converted to .

The invention therefore relates to a cosmetic product incorporating materials that change color in response to magnetic forces applied externally by an electronic device (controlled by a computer application) and by the method itself for implementing the product. .

As we know, makeup has ancient origins and all the cosmetic products currently available to us are the result of centuries of history, discoveries and traditions, which have evolved over time and are based on science, In particular, it is gradually intersecting with medicine. The cult of beauty or personal aesthetic care was already widespread in ancient Egypt. Cleopatra's people were pioneers in developing a wide range of cosmetic products and documenting their importance in their culture. The Egyptians used Kohl. Coal is a dark powder obtained by grinding burnt almonds, lead and copper, minerals, ash and ocher. The processed substance was applied to the eyes with a stick and was thought to be very attractive by giving it an almond appearance. However, more than just makeup, the heavy makeup of the ancient Egyptians, especially the beautiful queens like the legendary Nefertiti, not only made the eyes colorful, enchanting and gorgeous, but also had real preventive and curative effects. was. This is because makeup actually protected the eyes from infection.

Already in the 1st century, even the Romans were using kohl for eyelash and eyebrow makeup. Roman women in the late 3rd century B.C. began to wear long, elaborate hairstyles made of overlapping curls. Dyes were often used, and a popular color was reddish-blond. Their lips were dyed red with ocher powder, their faces and arms were dyed white with white dye or chalk, and the outlines of their eyes were dyed black with soot. To whiten and soften the skin, donkey milk was used, and to give it freshness, it was sprinkled with cerussa, a cream based on toxic lead oxide. During the reign of Queen Victoria, actresses began wearing facial makeup. Women went to drastic measures and used ingredients such as lead and arsenic to appear with transparent skin. This is because they cannot even expose themselves to sunlight, and in order to keep their skin young and healthy, they need to protect their skin with a veil and an umbrella. Natural ingredients such as oatmeal, honey, egg yolk and rose replaced cosmetic products. The eyebrows were redesigned and rice powder was used on the face and décolletage.

In the 1930s, makeup became popular among women of all social classes. Her contours were naturally covered with foundation, and her mouth was colored in the shape of a heart. Both the eyebrows and the eye shape are thin and flabby, which contributes to the typical melancholy appearance.

Makeup in the 1970s evolved further. The accent remained on the eyes, and false eyelashes appeared. Lips are colored with pearlescent and pale shades. Ingredients used in these first modern cosmetic products were vegetables such as glycerin, seed oils, lanolin, and beeswax. For a time, however, the growing petroleum industry offered low-cost mineral derivatives such as Vaseline oil, Vaseline streamers, and paraffin. In the 1980s, the trending makeup was strong, emphasized, dark, and dramatic eyes. Such eyes are formed by multilayer eyeliner and bright eyeshadows of blue, green and purple shades. Metallic powder made from the mineral mica has become famous for its use on the eyelids and body to create vivid reflections.

Anthropology teaches that makeup, from its inception, has not only the function of embellishing the body image, but also relates to the concepts of identity and culture belonging to different ethnicities and races. To name a few examples, consider Native Americans, for example, whose typical clothing and colors identify them as belonging to a particular tribe. Also, Indian women usually cover their foreheads to communicate their new status to the world. Indigenous people wear more makeup during the holidays. In all these cases, makeup is a powerful form of communication that has the meaning of differentiating oneself from others.

Although the way we live in the world has changed now, this meaning has remained the same. Therefore, from this point of view, makeup has a very similar communicative function for African tribes and for current and upcoming teenagers.

In the state of the art, there are several cosmetic compositions belonging to the cosmetic family, made in different chemical forms. In fact, cosmetic products of different cosmetic families are divided into powders (divided into free, compact, cooked and extruded), anhydrous (castings and extruded), for example. ), emulsions (divided into oil-in-water, water-in-oil, and water and silicone), pencil-shaped ones (made of wood or plastic), enamels, and various ones ( oils, gels, ointments, pastes, and solutions).

Powders can be free, compacted, cooked (water removed), or extruded (similar to chalk). Cosmetic products in powder form on the market include powder, compact foundation, earth, cheek, eye shadow, and body powder. Powder application areas are face (powder, foundation, cheek, earth), eyelids (eyeshadow), and body (talcum powder and Asperser powder). Powders must meet specific technical requirements such as coverage, opaque appearance, adhesion, absorbency, and smoothness. Among powders, one of the most popular products is, of course, face powder. Face powders are generally mixtures of porous multi-powders of mineral origin and silicones and synthetic oils that characterize their application and adhesion to the epidermis. Face powder is further divided into compact powder and loose powder. Compact face powders are the most common, colored, synthetic products rich in binding substances and pigments. Face powder is used instead of foundation, especially to finish makeup during the day. Loose face powders are clear or slightly pigmented and are used to set makeup in place without weighing it down or changing the color of previously applied foundation.

Anhydrous compounds are compounds that do not contain water, and a distinction is made between casting and extrusion. Lipsticks, glosses, concealers, eyeshadows, blushes, foundations, eyeliners, and mascaras are anhydrous compounds. A solution is a homogeneous mixture formed by dispersed components (solute) in a dispersion medium (solvent). In the cosmetic field, the solutions used may be aqueous alcoholic or water and may contain salts, extracts, and other water-soluble substances. When a substance is dispersed in a liquid to form a clear, clear solution, it means that it is a soluble substance. Two liquids are said to be miscible when they can dissolve in each other. Examples of solution-based cosmetic products are tonics, lotions, balsams, cleansers, and clutches. An emulsion is a very fine dispersion of one liquid in another that cannot be mixed. Mixing of the two phases is made possible by emulsifiers. The main types of emulsions include:
Oil-in-water type (O/W): Oil is dispersed in water, and the proportion of aqueous portion is high. For example, there are emulsions used for sunscreens or in creams specifically for dry or oily skin.
Water-in-oil (W/O): Water is dispersed in oil, and the proportion of oily parts is high. This type of emulsion is slightly oily.

Generally, cosmetic products in emulsion form are more or less fluid creams (such as foundations and primers), mascaras, eyeliners, lipsticks, and some hair care products.

Pencil-shaped cosmetic products are available on the market in various types, such as for lips, eyes, and eyebrows. Different areas of the face to be applied require different types of pencil-shaped cosmetic products. Pencil-shaped cosmetic products differ depending on the mine. It is recommended to use a soft pencil for the eyes and a hard pencil for the lips and eyebrows.

Nail polish is a cosmetic product used to color and protect nails. Nail polish contains a mixture of inorganic pigments and other functional ingredients. The more concentrated these substances are, the more or less charged the enamel takes on a tone.

As is known, structural coloration is the production of color by means of microscopically structured surfaces, sometimes in combination with pigments. The microscopically structured surface is sufficiently thin to allow interference by visible light. For example, a peacock's tail feathers are colored brown, but their microscopic structure reflects blue, turquoise, and green light, often resulting in iridescence.

Structural coloration was first observed by British scientists Robert Hooke and Isaac Newton, and its principle, wave interference, was elucidated by Thomas Young a century later. According to Young, iridescence is the result of a combination of interference between the reflections of two or more thin film surfaces and refraction as light enters and exits these thin films. And geometry dictates that at certain angles, the light reflected from both surfaces interferes constructively, and at other angles, the light interferes destructively. Thus, different colors appear at different angles.

In animals, e.g. bird wings and butterfly scales, interference occurs through a series of photonic mechanisms including diffraction gratings, selective mirrors, photonic crystals, crystal fibers, nanochannel matrices, and proteins that can change their composition. Occurs due to

Furthermore, when a suspension of clusters of colloidal nanocrystals of iron oxide is exposed to a magnetic field, the colloidal nanocrystal clusters (CNCs, i.e., magnetically colored microparticles) are arranged in a periodic matrix, forming a photonic crystal; It is also known to diffuse light in the visible spectral region, as well as in the ultraviolet and infrared regions. Adjusting the magnetic field strength applied to the CNC changes the photonic crystal structure and changes the wavelength (color) of the diffracted light. In other words, the color appearing by the CNCs can be controlled by varying the strength of the magnetic field applied to the suspension containing the CNCs.

One of the first publications describing the development of particles with color change attributes, namely superparamagnetic magnetite (Fe3O4) CNCs, is International Application Publication WO 2009/017525. Polyacrylic acid is used as a surfactant for strong coordination of carboxylated groups with iron cations on the magnetite surface. International application publication WO 2009/017525 also describes a method for making colloidal photonic crystals from superparamagnetic magnetocaloric CNCs coated with polyacrylate. These CNCs can be easily aligned into colloidal photonic crystals in polar solvents (eg, water or alkanols) and thus can be subjected to magnetic fields. The optical response of photonic crystals is rapid and completely reversible. Additionally, International Application Publication WO 2010/096203 teaches a method of aligning superparamagnetic CNCs into colloidal photonic crystals in a non-polar solvent using charge control agents to generate long-range electrostatic repulsion forces on the CNCs. There is. This method involves coating the CNCs with a hydrophobic coating so that the CNCs are soluble in the non-polar solvent solution, and adding a surfactant (charge control agent) to the non-polar solvent solution, the surfactant increasing the charge separation between and forming ordered structures with tunable particle separation. Finally, International Application Publication WO 2012/122216 describes a method for producing fixed individual nanochains with magnetophotonic properties, in which CNCs are coated with a silica layer. A magnetic field is applied to the CNCs to align them into photonic chains, and the photonic chains are further coated with a silica layer. The particle chains are then permanently fixed by the silica overlap so that they are retained when dispersed in solution or dried on a solid substrate.

Although the composition of materials and production processes for creating cosmetic products have evolved, the latter has remained constant. In fact, the application of magnetically colored microparticles in cosmetic products, for example to make makeup dynamic and interactive, is unknown. However, now social contexts require people to express themselves differently, so it is often necessary to completely change makeup several times during the day, depending on the context. To achieve this, obviously a lot of time and a large number of cosmetic products with different colors are required to be available.

Therefore, there is a need to identify innovative dynamic cosmetic products that can change color instantly once applied, and methods to achieve the "dynamic" nature of such cosmetic products. In this way, users can automatically change the color of their makeup in response to different social scenarios without having to remove and put it back on. Microscopic polymer microparticles that change color immediately and reversibly when an external magnetic field acting on the microparticle changes their orientation have been created by a research group at the University of California, Riverside (UCR). Beads or "magnetic colored microparticles" have excellent structural stability. It is also highly compatible with various types of dispersion media such as water, alcohol, hexane, and even polymer solutions, allowing it to have magnetically tunable colors in various chemical environments. Unlike conventional methods, the instantaneous and reversible color change of polymer microparticles occurs without changing their structural and essential properties. This mechanism involves dispersing these magnetically colored microparticles into a liquid such as water, alcohol, hexane, or a polymer solution. These microparticles contain iron oxide nanostructures that are rotated by an external magnetic field acting on them, allowing the polymer particles to change color instantly. The colors observed in new materials are "structural colors." This is because it is caused by interference effects, not pigments. Traditional methods of producing tunable color changes rely on process techniques that are difficult to achieve and slow, such as altering the periodicity of the array or the refractive index of the material. In this new method, external fields are suitably used to tune the color by changing the relative orientation of periodic arrays within the microparticles. When the material is exposed to a magnetic field, the distance between the nanoparticles is adjusted so that any color in the visible spectrum can be visualized (Figure 1).

Therefore, the object of the present invention is to provide an innovative cosmetic product containing magnetically colored microparticles with reversible color, i.e., cosmetic products such as lipsticks, glosses, eye shadows, etc., and the color of the cosmetic product by applying an external magnetic field. The goal is to provide a method for changing the makeup or realizing "dynamism" in makeup. Such microparticles, e.g. colloidal iron oxide nanocrystals arranged in chains, have been incorporated into the formulation of cosmetic products, where the nanocrystals can visualize the color determined by external forces applied to the cosmetic product. is possible. As described in the independent cosmetic product claim, the cosmetic product comprises magnetically colored microparticles that can be changed by an external device to change the color of the makeup without the need for reapplying the makeup. can be changed.

A method for changing the color of a dynamic cosmetic product is described in the independent method claim, and a system for implementing the method is described in the independent device claim.

The dependent claims describe particular and further advantageous aspects of the invention.

These and other advantages of the invention will be described in detail below with reference to the accompanying drawings, which represent exemplary embodiments of the invention.

FIG. 2 is a diagram illustrating the effect of an external magnetic field on microparticles, illustrating that, according to the prior art, an external magnetic field changes the orientation of the microparticles, resulting in a change in color, allowing any color display in the visible spectrum; It is a diagram. 1 is a simplified diagram of a system according to the invention; FIG. FIG. 2 shows a computer interface in the form of a mobile application for a smartphone for creating makeup colors. 3 is a diagram illustrating the interaction between the computer interface of FIG. 2 and magnetically colored microparticles of a dynamic cosmetic product. FIG. 1 is a block diagram for manufacturing a dynamic cosmetic product according to an embodiment of the present invention. FIG. 2 is a simplified diagram of a system according to a further embodiment of the invention, without a wearable electronic device; FIG. Figure 3 shows a casing containing a refill. FIG. 3 shows a refill capsule. FIG. 3 is a diagram illustrating an example embodiment of a combination of refill holders. FIG. 3 is a diagram illustrating an example embodiment of a combination of refill holders. FIG. 3 is a diagram illustrating an example embodiment of a combination of refill holders.

In the attached figure a dynamic cosmetic product 1 is shown, in particular a lipstick for the lips. The color of the lipstick is changed by the application of a magnetic field generated by the wearable electronic device 3. The polarity of the magnetic force generated by the wearable electronic device 3 is controlled by a computer application 2, for example an application of a smartphone or smartwatch.

In particular, the wearable electronic device 3 has internally a wireless communication system and a magnetic field emitter activated by electromagnetic or mechanical motion. The dynamic cosmetic product 1 has colored magnetic coloring microparticles 10 inside, which rotate and align in response to a magnetic field applied to them to exhibit a desired color.

The dynamic cosmetic product 1, for example, a lipstick, includes in its formulation, in addition to the magnetic coloring microparticles 10,
a base composed of waxes (to provide stability, resistance and film-forming properties) and oils of various substances (to ensure brightness, softness and dispersion of the pigments);
A natural pigment (iron oxide) or a synthetic pigment (lacquer) that gives the lipstick its color;
preservative and
Antioxidants that prevent oily ingredients and perfume from going rancid,
Texturing to ensure a sensory effect;
Functional substances: moisturizing, anti-aging, volume increase, emollient,
emulsifier (for the aqueous base needed to combine with the oily one),
is included.

The magnetically colored microparticles may be in the form of powders with different particle size distributions or may be solutions stabilized with non-polar solvents. The application of a magnetic field and the relative color change are caused by charging a surfactant (emulsifier) added to a non-polar solution and adding magnetically colored microparticles to the solution. A non-polar environment that stabilizes the magnetically colored microparticles is also ensured by the oil phase (phase A).

<Formulation example>

As shown in the block diagram of FIG. 5, a dynamic cosmetic product 1, for example a lipstick, is manufactured as described below. The wax is melted with oil to 75°C, rheology modifiers are dissolved or dispersed in the hot melt, and emulsifiers and texturizers are added (Phase A). Pigment and magnetically colored microparticles are dispersed in a portion of the deposit (Phase B). The dispersion is immediately purified in a three cylinder machine and recombined with the fatty phase. Separately, weigh the components of the aqueous phase and bring to 75°C. Now, slowly add the aqueous phase to the fat phase with vigorous stirring or by means of a homogenizer. The resulting emulsion is poured into a suitable mold and allowed to cool at room temperature.

The method of changing the color of the dynamic cosmetic product 1 comprising magnetically colored microparticles 10 is then preferably carried out by means of a wearable magnetic source. The force of the generated magnetic field can be controlled by an external computer system or computer application to control the polarity and strength of the magnetic source.

The magnetic source may be the electronic device 3 or the casing 12 of the dynamic cosmetic product 1.

This method is
applying a dynamic makeup product according to a normal makeup method;
activating a magnetic source to generate a magnetic field controllable by an external IT system;
operating a computer application to control the polarity and strength of the magnetic source;
It will be carried out using procedures including:

As shown in FIG. 2, after applying a dynamic cosmetic product 1, for example a pink lipstick, to the lips, this color can be changed by using a computer application 2 without the need for reapplication. The computer application 2 can interact with a wearable electronic device 3 equipped with a magnetic source. Due to the interference effect of the magnetic source on the magnetically colored microparticles present in the applied dynamic cosmetic product 1, the color of the dynamic cosmetic product 1 can be changed, for example into a red lipstick 1'.

By activating a computer application 2 with a smartphone (see FIG. 3) or a smartwatch, it is possible to select the applied dynamic cosmetic product 1 and view the possible color variations of the dynamic cosmetic product 1. In this way, the selection of a lipstick color, such as red, is simulated, as shown in FIG. The computer application then communicates wirelessly with the wearable electronic device 3 (e.g. a ring, bracelet, etc.) or directly with the casing 12 of the product as shown in FIG. 6, for example. Depending on the color selection made by the user via the application, intensity and magnetic polarity are applied to the cosmetic product 1. When the wearable electronic device 3 is brought close to the cosmetic product 1, the magnetically colored microparticles 10 (as shown in FIGS. 4 and 8) change their orientation to exhibit the desired color. At this time, the color of the dynamic cosmetic product 1 is changed with respect to the initially applied color. The color remains stable until further color changes are required. Further color changes can be performed whenever desired by the user by performing the described steps until the makeup itself is removed.

Advantageously, the dynamic cosmetic product can be refilled once it has been used up. Refilling is achieved by using a refill capsule of the product without changing the casing of the dynamic cosmetic product. Specifically, the capsule contains different cosmetic products of selected dynamic colors, or the cosmetic product can be inserted into the casing and refilled, so that it can be used again when applying makeup. . Thus, using a refill inserted directly into the casing also eliminates the problem of bacteria formation within the cosmetic product. In fact, by refilling with capsules, the cosmetic product does not come into contact with the outside world. Each capsule is sealed and vacuum sealed, thus preserving the quality and purity of the cosmetic product. The expiry date is displayed digitally by a notification on the mobile device being used. Advantageously, in this case, a refill color is selected, which creates a customized color by changing the shade when you want to change your makeup. Capsule refills are available in over 100 different colors to create specific shades or color variations.

For example, if we consider a casing 12 used as a lipstick or gloss, as shown in Figure 7, the color contained in the refill 11 passes through a removable and washable support 14 to reach the outer brush 13 of the casing. . In this way, the outer brush 13 does not come into contact with the ink within the capsule. Therefore, the sanitary state of the ink within the capsule can be maintained. The inside of the base of the support is provided with a sharp fastening part that can penetrate a new capsule when it is first inserted into the base of the lip gloss. A new refill 11 can be easily inserted into the casing 12 after the previous refill has been used up.

Advantageously, as shown in FIG. 6, the innovative casing 12 includes advanced technology and is capable of housing and controlling dynamic cosmetic product capsules. In this way, changing the color can also take place directly within the casing 12 itself. For example, the casing 12 is in direct wireless communication with a computer application, and the interior of the casing 12 is equipped with a magnetic field emitter, a wireless antenna, and the necessary electronic components. Furthermore, each casing 12 is made in the shape of a parallelepiped, with all of its sides being magnetic sides, and is coupled to each other by magnetic forces, as shown schematically and exemplarily in FIGS. 9A, 9B and 9C. , forming all combinations of shapes involving several parallelepiped casings. In this way, it is possible to create a configuration of the casing 12 that can be adapted to all of the available space.

Although at least one exemplary embodiment has been generally described and a detailed description has been presented, it is to be understood that there are numerous variations that fall within the scope of protection of the invention. . Furthermore, it must be understood that the presented embodiment or embodiments are only examples that are not intended to limit in any way the scope of protection of the invention or its applications or configurations. Rather, the brief description and detailed description will provide those skilled in the art with a convenient guide for implementing at least one exemplary embodiment. Numerous variations may be made in the function and arrangement of the elements described herein without departing from the scope of protection of the invention established by the appended claims and their legal technical equivalents. It is clear that it can be done.

Claims (13)

A dynamic cosmetic product (1) containing magnetically colored fine particles (10) in its formulation,
a refill (11) comprising a replaceable capsule containing said dynamic cosmetic therein;
a casing (12) into which said refill (11) is inserted;
an outer brush (13) for applying the dynamic cosmetic;
a support (14) comprising a fixed part connected at one end to the casing (12) and at the other end to the outer brush (13) and passing through the capsule;
Equipped with
The color of the dynamic cosmetic changes by changing the orientation of the magnetically colored fine particles (10) under the action of a magnetic field,
The casing (12) is configured to be refilled once the dynamic cosmetic has been used up by the refill (11) containing the replaced capsule ;
the casing (12) has side surfaces that are all magnetic sides, the side surfaces being magnetic sources for generating the magnetic field ;
the magnetic source is activated by a computer application (2) in communication with the casing (12);
A dynamic cosmetic product (1) characterized by: The magnetically colored fine particles (10) are colloidal nanocrystals of iron oxide having a periodic arrangement of fine particles ,
The orientation of the periodic array of the fine particles changes due to the action of the magnetic field.
Dynamic cosmetic product (1) according to claim 1. The dynamic cosmetic contained in the refill (11) reaches the outer brush (13) through the removable and washable support (14) by penetrating the capsule with the fixing part . do ,
Dynamic cosmetic product (1) according to claim 1 or 2. The casing (12) is equipped with a magnetic field emitter, a radio antenna and electronic components in order to perform a color change directly within it.
Dynamic cosmetic product (1) according to claim 1 or 2. The casing (12) includes a plurality of casings (12) coupled to each other by magnetic force and is configured to form all combinations of shapes of the plurality of casings (12).
Dynamic cosmetic product (1) according to claim 1 or 2. A method for changing the color of the dynamic cosmetic product (1) comprising the magnetically colored fine particles (10) according to any one of claims 1 to 5, comprising:
step (a) of applying the dynamic cosmetic ;
(b) activating the magnetic source to generate a magnetic field by an external computer system;
(c) activating a computer application (2) to select the color to be obtained and to transmit the polarity and intensity of the magnetic field to the casing (12) of the dynamic cosmetic product (1) ;
including methods. 7. A method according to claim 6, wherein the magnetic source is activated by a computer application (2). 8. A method according to claim 6 or 7, wherein the magnetic source is an electronic device (3) or the casing (12) of the dynamic cosmetic product ( 1 ). Before said step (a), a capsule of said dynamic cosmetic product (1) is inserted inside said casing (12);
A method according to any one of claims 6 to 8. System for applying the method according to any one of claims 6 to 9, comprising the dynamic cosmetic product (1), a computer application (2) and a magnetic source. System according to claim 10, wherein the computer application (2) is a mobile application for a smartphone or a smartwatch. System according to claim 10 or 11, wherein the magnetic source is a wearable electronic device (3). System according to any one of claims 10 to 12, wherein the magnetic source is the casing (12) of the dynamic cosmetic product (1).

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